What is mg so3?

MgSO3 is the chemical formula for magnesium sulfite. It is an inorganic compound that is usually found as a white crystalline solid. MgSO3 is soluble in water and has a melting point of 1,180 °C. Magnesium sulfite is primarily used in the paper and pulp industry as a bleach stabilizer, preventing the breakdown of hydrogen peroxide due to metal catalysts. It has also been used as a food additive and in the medical industry as an antioxidant and preservative in medications. However, it is not a common compound and its usage is limited.